<template>
    <div class="search">
      <van-nav-bar title="商品搜索" left-arrow @click-left="$router.go(-1)" />
  
      <van-search @keypress.enter="goSearch(search)" v-model="search" show-action placeholder="请输入搜索关键词" clearable >
        <template #action>
          <div @click="goSearch(search)">搜索</div>

        </template>
      </van-search>
  
      <!-- 搜索历史 -->
      <div class="search-history" v-if="history.length > 0">
        <div class="title">
          <span>最近搜索</span>
          <van-icon @click="clear" name="delete-o" size="16" />
        </div>
        <div class="list">
          <div v-for="item in history" class="list-item" :key="item" @click="goSearch(item)">{{ item }}</div>
        </div>
      </div>
    </div>
</template>
  
<script>
  import { getHistoryList, setHistoryList } from '@/utils/storage'
  //todo import store from '@/store'

  export default {
    name: 'SearchIndex',
    data () {
        return {
            search: '',
            history: getHistoryList()
            //todo history: store.state.SearchHistory.searchInfo
        }
    },
    methods: {
      goSearch (key) {
        // 添加空值检查
        if (!key || !key.trim()) {
          this.$toast('请输入搜索关键词')
          return
        }
        
        const index = this.history.indexOf(key)
        //? 如果点击的是已经存在的搜索记录，需要将其前移
        if ( index !== -1 ) {
          this.history.splice(index, 1)
        }
        this.history.unshift(key)
        setHistoryList(this.history)
        this.$router.push(`/searchlist?search=${key}`)
      },
      clear () {
        this.history = []
        setHistoryList([])
        this.$toast.success('清空历史成功')
      }
    }
  }
</script>
  
<style lang="less" scoped>
  .search {
    .searchBtn {
      background-color: #fa2209;
      color: #fff;
    }
    ::v-deep .van-search__action {
      background-color: #c21401;
      color: #fff;
      padding: 0 20px;
      border-radius: 0 5px 5px 0;
      margin-right: 10px;
    }
    ::v-deep .van-icon-arrow-left {
      color: #333;
    }
    .title {
      height: 40px;
      line-height: 40px;
      font-size: 14px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 0 15px;
    }
    .list {
      display: flex;
      justify-content: flex-start;
      flex-wrap: wrap;
      padding: 0 10px;
      gap: 5%;
    }
    .list-item {
      width: 30%;
      text-align: center;
      padding: 7px;
      line-height: 15px;
      border-radius: 50px;
      background: #fff;
      font-size: 13px;
      border: 1px solid #efefef;
      overflow: hidden;
      white-space: nowrap;
      text-overflow: ellipsis;
      margin-bottom: 10px;
    }
  }
</style>